.banner{
    height: 500px;
}
.banner1{
    background: url("../img/banner.jpg");
}
.banner2{
    background: url("../img/banner2.jpg");
}
.banner3{
    background: url("../img/banner3.jpg");
}
@media (max-width: 600px) {
    .banner{
        height: 230px;
        text-align: center;
    }
    .banner1{
        background: url("../img/banner.jpg") center center no-repeat;
        background-size: cover;
    }
    .banner2{
        background: url("../img/banner2.jpg")center center no-repeat;
        background-size: cover;
    }
    .banner3{
        background: url("../img/banner3.jpg")center center no-repeat;
        background-size: cover;
    }
    .col-md-6 p{
        height: 20px;
        overflow: hidden;
    }
}
.card p{
    height: 30px;
    overflow: hidden;
}
.beijing{
    background: url("../img/banner4.jpg") center center no-repeat;
    background-size: cover;
}
.col-md-6{
    margin-top: 40px;
}
.col-md-6 ul{
    padding: 0;
    float: left;
    list-style-type: none;
}
.col-md-6 .col-12 a,.col-12 li{
    line-height: 30px;
    font-size: 13px;
}
.dj{
    background: #f5f5f5;
}





